Originally Posted by
Will08
You could do dummy bookings and look for flights that are showing miles upgrades available to get an idea of where EK believe J will be low. It really is pot luck though. Even in terms of which type of economy ticket you purchase doesn't increase your chances and also makes is less economically viable the higher the economy fare you purchase.
As a Plat I don't think I have ever received an email upgrade and I am not sure if I ever received one as Gold so factor in your status as well.
I received offers as a Gold member but it's been a few years so not sure if that's changed. It definitely seems to be more common for flights where J loads are low e.g. DFW-DXB with an A380 was never near full in J and I gladly accepted the offers for 16h. I had good luck getting op ups on just about all my JFK A380 flights as a Gold and Silver.